Also, there are only several hundred of them. The 6,000 you are referring to are troops the Russians brought in yesterday. These troops are not appearing "with all identification hidden".
The commenter may have implied they were troops of the Russian Army, but did not outright say it. Since these few hundred are mercenaries (might as well call them that, not 'private contractors'), they are still an extension of a sovereign nations armed forces.
Yep, just like Blackwater, etc were an extension of American might in Iraq. Unless the parent wants to go down teh path of saying that American PMCs in Iraq had nothing to do with American might and power?
Also, there are only several hundred of them. The 6,000 you are referring to are troops the Russians brought in yesterday. These troops are not appearing "with all identification hidden".